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A rectangle PQRS has its side PQ paralle...

A rectangle PQRS has its side PQ parallel to the line y = mx and vertices P,Q and S on the lines y = a , x = b and `x = -b` respectively . Find the locus of the vertex R .

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The correct Answer is:
`(m^(2)-1)x-my+b(m^(2)+1)+am=0`
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